EP0790437A1 - Tensioning device of a transmission chain connecting two camshafts of an internal combustion engine - Google Patents

Tensioning device of a transmission chain connecting two camshafts of an internal combustion engine Download PDF

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Publication number
EP0790437A1
EP0790437A1 EP97400260A EP97400260A EP0790437A1 EP 0790437 A1 EP0790437 A1 EP 0790437A1 EP 97400260 A EP97400260 A EP 97400260A EP 97400260 A EP97400260 A EP 97400260A EP 0790437 A1 EP0790437 A1 EP 0790437A1
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EP
European Patent Office
Prior art keywords
camshafts
chain
cylinder head
screws
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97400260A
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German (de)
French (fr)
Other versions
EP0790437B1 (en
Inventor
Didier Girard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0790437A1 publication Critical patent/EP0790437A1/en
Application granted granted Critical
Publication of EP0790437B1 publication Critical patent/EP0790437B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/18—Means for guiding or supporting belts, ropes, or chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]

Definitions

  • the invention relates to a device for tensioning a transmission chain connecting two camshafts of a combustion engine.
  • the tension of a transmission chain is commonly carried out by pressing a tensioner - spring or hydraulic - on a section of the chain, and preferably in addition with the support of another section of the chain on a fixed shoe. .
  • the object of the invention is to produce in a simple and reliable manner the tension of a chain connecting two camshafts of an engine of the aforementioned type.
  • the device according to the invention is characterized in that, the chain comprising a lower section and an upper section respectively closer and further away from the cylinder block and being arranged above two cylinder head fixing screws , it comprises a tensioner acting on the upper section while being disposed above it, and a support shoe of the lower section maintained under the latter by means of the two aforementioned screws.
  • a cylinder head 2 of a combustion engine intended to be fixed, in line with a lower face 3, on a cylinder block not shown, by screws such as those 4 visible in Figures 1 and 5
  • the cylinder head comprises two parts, respectively lower 6 and upper 8, joined along a plane P to the right of which are carried two camshafts 10 and 12 which are mutually parallel and perpendicular to the screws 4. These include a head 5 which bears on a face 7 of the lower part 6, this face being situated below the plane P.
  • a cylinder head cover 9 is conventionally placed on the upper part 8.
  • the camshaft 10 is integral with a toothed wheel 14 for its drive by the main shaft of the engine by means of a toothed belt 16, and it is connected to the camshaft 12 by a transmission chain 18 which meshes with two pinions 20, 22 respectively fixed to the two camshafts and which comprises two sections, respectively lower 24 and upper 26, connecting the two pinions.
  • the lower section 24 is closer to the lower face 3 - and therefore to the cylinder block after assembly of the engine - and the upper section 26 is further away.
  • the chain 18 is arranged above the two screws 4, and a chain tensioning device comprises on the one hand a conventional tensioner 28 - spring or hydraulic, not detailed here-arranged above of the upper section 26 so as to act on it by a pusher pad 29, and on the other hand a pad 30 for supporting the lower section 24, held under the latter by engagement -with tightening or very slight play- of the head 5 of each of the two screws 4 in one of two suitable end recesses 32 formed in the shoe 30, as visible in FIG. 4.
  • a chain tensioning device comprises on the one hand a conventional tensioner 28 - spring or hydraulic, not detailed here-arranged above of the upper section 26 so as to act on it by a pusher pad 29, and on the other hand a pad 30 for supporting the lower section 24, held under the latter by engagement -with tightening or very slight play- of the head 5 of each of the two screws 4 in one of two suitable end recesses 32 formed in the shoe 30, as visible in FIG. 4.
  • the tensioner 28 is fixed by three screws 34 to the upper part 8 of the cylinder head, the head of each screw 4 (hexagonal or cylindrical) projects upwards from the aforementioned face 7 while being located under the chain, and the recesses 32 each consist of a cylindrical blind bore.
  • the pad is preferably made of hard plastic material.
  • the mounting of this device is particularly simple: after fixing the lower part 6 of the cylinder head to the cylinder block by means of the screws 4, the pad 30 is successively placed on the screw heads 5, the two camshafts 10 and 12 fitted with sprockets 20 and 22 with the chain 18, then the upper part 8 of the cylinder head, the tensioner 28 and the cylinder head cover 9.
  • the shoe 30a for supporting the lower section 24 of the chain is here of small size and carried by a metal blade 30b, the ends of which are drilled so as to be crossed and fixed to the faces 7 of the cylinder head by the two screws 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The tensioner is for a transmission chain between sprockets (20,22) on the ends of two parallel crankshafts (10,12) located inside a cylinder head fixed to a block by bolts (4). The tensioner consists of a tensioning element (28) which acts on the upper section (26) of the chain, and a shoe (30) which presses against the lower section (24) and is fitted between the heads of the cylinder head bolts (4). The cylinder head is made in a lower section (6) and an upper section (8), joining along a plane (P) containing the axes of the two camshafts. The lower section is fixed to the cylinder block by the bolts and the upper one has the tensioning element fixed to it. The shoe beneath the chain is made preferably from a hard plastics and has two recesses which engage with the heads of the bolts.

Description

L'invention est relative à un dispositif de tension d'une chaîne de transmission reliant deux arbres à cames d'un moteur à combustion.The invention relates to a device for tensioning a transmission chain connecting two camshafts of a combustion engine.

Elle concerne plus précisément les moteurs à combustion dans lesquels deux arbres à cames sont disposés parallèlement dans une culasse fixée sur un bloc-cylindres par des vis perpendiculaires à ces deux arbres, qui sont reliés par une chaîne assurant l'entraînement en rotation de l'un des deux arbres par l'autre entraîné lui-même par l'arbre principal du moteur.It relates more specifically to combustion engines in which two camshafts are arranged in parallel in a cylinder head fixed on a cylinder block by screws perpendicular to these two shafts, which are connected by a chain ensuring the rotational drive of the one of the two shafts by the other driven itself by the main engine shaft.

La tension d'une chaîne de transmission s'effectue couramment par appui d'un tendeur -à ressort ou hydraulique- sur un tronçon de la chaîne, et de préférence en plus avec appui d'un autre tronçon de la chaîne sur un patin fixe.The tension of a transmission chain is commonly carried out by pressing a tensioner - spring or hydraulic - on a section of the chain, and preferably in addition with the support of another section of the chain on a fixed shoe. .

On connaît, pour assurer la tension d'une chaîne reliant deux arbres à cames d'un moteur, un dispositif de tension placé entre les deux tronçons de chaîne reliant deux pignons fixés chacun à l'un des deux arbres. Dans un tel agencement, la fixation du dispositif est difficile, et l'espace étant restreint entre les deux tronçons, ceux-ci sont généralement écartés et incurvés notablement par le dispositif de tension, ce qui réduit le rendement de la transmission.It is known, to ensure the tension of a chain connecting two camshafts of an engine, a tensioning device placed between the two sections of chain connecting two sprockets each fixed to one of the two shafts. In such an arrangement, the fixing of the device is difficult, and the space being limited between the two sections, these are generally separated and curved notably by the tensioning device, which reduces the efficiency of the transmission.

L'invention a pour but de réaliser de façon simple et fiable la tension d'une chaîne reliant deux arbres à cames d'un moteur du type susmentionné.
A cet effet, le dispositif selon l'invention est caractérisé en ce que, la chaîne comportant un tronçon inférieur et un tronçon supérieur respectivement plus proche et plus éloigné du bloc-cylindres et étant disposée au-dessus de deux vis de fixation de la culasse, il comprend un tendeur agissant sur le tronçon supérieur en étant disposé au-dessus de lui, et un patin d'appui du tronçon inférieur maintenu sous celui-ci au moyen des deux vis précitées.The object of the invention is to produce in a simple and reliable manner the tension of a chain connecting two camshafts of an engine of the aforementioned type.
To this end, the device according to the invention is characterized in that, the chain comprising a lower section and an upper section respectively closer and further away from the cylinder block and being arranged above two cylinder head fixing screws , it comprises a tensioner acting on the upper section while being disposed above it, and a support shoe of the lower section maintained under the latter by means of the two aforementioned screws.

Suivant quelques dispositions préférées de ce dispositif :

  • la culasse comprenant deux parties, respectivement inférieure et supérieure, jointes au droit d'un plan contenant les axes respectifs des deux arbres à cames, la partie inférieure est fixée au bloc-cylindres notamment par les deux vis précitées, et à la partie supérieure est fixé le tendeur.
  • les deux vis comportant une tête saillant d'une face de la culasse en étant située sous la chaîne, le patin comporte deux évidements d'extrémité propres à recevoir chacun la tête d'une des deux vis.
According to some preferred arrangements of this device:
  • the cylinder head comprising two parts, respectively lower and upper, joined to the right of a plane containing the respective axes of two camshafts, the lower part is fixed to the cylinder block in particular by the two aforementioned screws, and the upper part is fixed the tensioner.
  • the two screws comprising a head projecting from one face of the cylinder head while being located under the chain, the shoe comprises two end recesses suitable for each receiving the head of one of the two screws.

Deux modes de réalisation du dispositif selon l'invention sont décrits ci-après, avec référence aux dessins annexés parmi lesquels :

  • la figure 1 est une vue en coupe transversale, suivant la ligne I-I de la figure 2, d'une culasse d'un moteur équipé du dispositif selon un premier mode de réalisation ;
  • la figure 2 est une vue partielle en coupe suivant la ligne ll-ll de la figure 1;
  • la figure 3 est une vue partielle de dessus suivant la flèche F de la figure 1, avec retrait de la partie supérieure de la culasse ;
  • la figure 4 est une vue en perspective d'une pièce du dispositif selon la figure 1 ;
  • la figure 5 est une vue analogue à la figure 1 d'une partie de la culasse et du dispositif selon un second mode de réalisation.
Two embodiments of the device according to the invention are described below, with reference to the accompanying drawings, among which:
  • Figure 1 is a cross-sectional view along line II of Figure 2, of a cylinder head of an engine equipped with the device according to a first embodiment;
  • Figure 2 is a partial sectional view along the line II-II of Figure 1;
  • Figure 3 is a partial top view along arrow F of Figure 1, with removal of the upper part of the cylinder head;
  • Figure 4 is a perspective view of a part of the device according to Figure 1;
  • Figure 5 is a view similar to Figure 1 of a portion of the cylinder head and the device according to a second embodiment.

On voit sur les figures une culasse 2 d'un moteur à combustion, destinée à être fixée, au droit d'une face inférieure 3, sur un bloc-cylindres non représenté, par des vis telles que celles 4 visibles aux figures 1 et 5. La culasse comprend deux parties, respectivement inférieure 6 et supérieure 8, jointes suivant un plan P au droit duquel sont portés deux arbres à cames 10 et 12 qui sont parallèles entre eux et perpendiculaires aux vis 4.
Celles-ci comportent une tête 5 qui prend appui sur une face 7 de la partie inférieure 6, cette face étant située au-dessous du plan P. Un couvre-culasse 9 est disposé de façon classique sur la partie supérieure 8.We see in the figures a cylinder head 2 of a combustion engine, intended to be fixed, in line with a lower face 3, on a cylinder block not shown, by screws such as those 4 visible in Figures 1 and 5 The cylinder head comprises two parts, respectively lower 6 and upper 8, joined along a plane P to the right of which are carried two camshafts 10 and 12 which are mutually parallel and perpendicular to the screws 4.
These include a head 5 which bears on a face 7 of the lower part 6, this face being situated below the plane P. A cylinder head cover 9 is conventionally placed on the upper part 8.

L'arbre à cames 10 est solidaire d'une roue dentée 14 pour son entraînement par l'arbre principal du moteur au moyen d'une courroie crantée 16, et il est relié à l'arbre à cames 12 par une chaîne de transmission 18 qui engrène avec deux pignons 20,22 respectivement fixés aux deux arbres à cames et qui comprend deux tronçons, respectivement inférieur 24 et supérieur 26, reliant les deux pignons. Le tronçon inférieur 24 est plus proche de la face inférieure 3 -et donc du bloc-cylindres après assemblage du moteur- et le tronçon supérieur 26 en est plus éloigné.The camshaft 10 is integral with a toothed wheel 14 for its drive by the main shaft of the engine by means of a toothed belt 16, and it is connected to the camshaft 12 by a transmission chain 18 which meshes with two pinions 20, 22 respectively fixed to the two camshafts and which comprises two sections, respectively lower 24 and upper 26, connecting the two pinions. The lower section 24 is closer to the lower face 3 - and therefore to the cylinder block after assembly of the engine - and the upper section 26 is further away.

Conformément à l'invention, la chaîne 18 est disposée au-dessus des deux vis 4, et un dispositif de tension de la chaîne comporte d'une part un tendeur classique 28 -à ressort ou hydraulique, non détaillé ici-disposé au-dessus du tronçon supérieur 26 de façon à agir sur lui par un patin-poussoir 29, et d'autre part un patin 30 d'appui du tronçon inférieur 24, maintenu sous celui-ci par engagement -avec serrage ou très faible jeu- de la tête 5 de chacune des deux vis 4 dans l'un de deux évidements d'extrémité 32 appropriés pratiqués dans le patin 30, comme visible à la figure 4.According to the invention, the chain 18 is arranged above the two screws 4, and a chain tensioning device comprises on the one hand a conventional tensioner 28 - spring or hydraulic, not detailed here-arranged above of the upper section 26 so as to act on it by a pusher pad 29, and on the other hand a pad 30 for supporting the lower section 24, held under the latter by engagement -with tightening or very slight play- of the head 5 of each of the two screws 4 in one of two suitable end recesses 32 formed in the shoe 30, as visible in FIG. 4.

Plus précisément le tendeur 28 est fixé par trois vis 34 à la partie supérieure 8 de la culasse, la tête de chaque vis 4 (hexagonale ou cylindrique) saille vers le haut à partir de la face 7 précitée en étant située sous la chaîne, et les évidements 32 sont constitués chacun d'un alésage borgne cylindrique. Le patin est réalisé de préférence en matériau plastique dur.More precisely, the tensioner 28 is fixed by three screws 34 to the upper part 8 of the cylinder head, the head of each screw 4 (hexagonal or cylindrical) projects upwards from the aforementioned face 7 while being located under the chain, and the recesses 32 each consist of a cylindrical blind bore. The pad is preferably made of hard plastic material.

Le montage de ce dispositif est particulièrement simple : après fixation de la partie inférieure 6 de la culasse sur le bloc-cylindres au moyen des vis 4, sont mis en place successivement le patin 30 sur les têtes de vis 5, les deux arbres à cames 10 et 12 équipés des pignons 20 et 22 avec la chaîne 18, puis la partie supérieure 8 de la culasse, le tendeur 28 et le couvre-culasse 9.The mounting of this device is particularly simple: after fixing the lower part 6 of the cylinder head to the cylinder block by means of the screws 4, the pad 30 is successively placed on the screw heads 5, the two camshafts 10 and 12 fitted with sprockets 20 and 22 with the chain 18, then the upper part 8 of the cylinder head, the tensioner 28 and the cylinder head cover 9.

Diverses variantes du dispositif peuvent être réalisées. Par exemple selon le mode de réalisation de la figure 5, le patin 30a pour l'appui du tronçon inférieur 24 de la chaîne est ici de petite dimension et porté par une lame métallique 30b dont les extrémités sont percées de manière à être traversées et fixées sur les face 7 de la culasse par les deux vis 4.Various variants of the device can be produced. For example, according to the embodiment of FIG. 5, the shoe 30a for supporting the lower section 24 of the chain is here of small size and carried by a metal blade 30b, the ends of which are drilled so as to be crossed and fixed to the faces 7 of the cylinder head by the two screws 4.

Claims (3)

Dispositif de tension d'une chaîne de transmission reliant deux arbres à cames d'un moteur à combustion dans lequel ces deux arbres à cames (10,20) sont disposés parallèlement dans une culasse fixée sur un bloc-cylindres par des vis (4) perpendiculaires à ces deux arbres qui sont reliés par une chaîne (18) comportant un tronçon inférieur (24) et un tronçon supérieur (26) respectivement plus proche et plus éloigné du bloc-cylindres,
caractérisé en ce que la chaîne (18) étant disposée au-dessus de deux vis (4) de fixation de la culasse (2), il comprend un tendeur (28) agissant sur le tronçon supérieur (26) en étant disposé au-dessus de lui, et un patin (30;30a) d'appui du tronçon inférieur (24), maintenu sous celui-ci au moyen des deux vis (4) précitées.Tensioning device of a transmission chain connecting two camshafts of a combustion engine in which these two camshafts (10,20) are arranged in parallel in a cylinder head fixed on a cylinder block by screws (4) perpendicular to these two shafts which are connected by a chain (18) comprising a lower section (24) and an upper section (26) respectively closer and further away from the cylinder block,
characterized in that the chain (18) being disposed above two screws (4) for fixing the cylinder head (2), it comprises a tensioner (28) acting on the upper section (26) by being disposed above from it, and a shoe (30; 30a) for supporting the lower section (24), held under the latter by means of the two aforementioned screws (4). Dispositif selon la revendication 1,
caractérisé en ce que la culasse (2) comprenant deux parties, respectivement inférieure (6) et supérieure (8), jointes au droit d'un plan (P) contenant les axes respectifs des deux arbres à cames (10,12), la partie inférieure (6) est fixée au bloc-cylindres notamment par les deux vis (4) précitées, et à la partie supérieure (8) est fixé le tendeur (28).Device according to claim 1,
characterized in that the cylinder head (2) comprising two parts, respectively lower (6) and upper (8), joined to the right of a plane (P) containing the respective axes of the two camshafts (10,12), the lower part (6) is fixed to the cylinder block in particular by the two aforementioned screws (4), and to the upper part (8) is fixed the tensioner (28). Dispositif selon l'une des revendications 1 et 2,
caractérisé en ce que les deux vis (4) comportant une tête (5) saillant d'une face (7) de la culasse en étant située sous la chaîne (18), le patin (30) comporte deux évidements d'extrémité (32) propres à recevoir chacun la tête d'une des deux vis.Device according to either of Claims 1 and 2,
characterized in that the two screws (4) comprising a head (5) projecting from one face (7) of the cylinder head while being located under the chain (18), the shoe (30) comprises two end recesses (32 ) suitable for each receiving the head of one of the two screws.
EP19970400260 1996-02-16 1997-02-06 Cylinderhead of an internal combustion engine comprising a tensioning device of a transmission chain connecting two camshafts Expired - Lifetime EP0790437B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601917 1996-02-16
FR9601917A FR2745056B1 (en) 1996-02-16 1996-02-16 DEVICE FOR TENSIONING A TRANSMISSION CHAIN CONNECTING TWO CAMSHAFTS OF A COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
EP0790437A1 true EP0790437A1 (en) 1997-08-20
EP0790437B1 EP0790437B1 (en) 2002-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970400260 Expired - Lifetime EP0790437B1 (en) 1996-02-16 1997-02-06 Cylinderhead of an internal combustion engine comprising a tensioning device of a transmission chain connecting two camshafts

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EP (1) EP0790437B1 (en)
DE (1) DE69709466T2 (en)
FR (1) FR2745056B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2917465A1 (en) * 2007-06-12 2008-12-19 Peugeot Citroen Automobiles Sa Internal combustion engine, has tensioning device with tensioning pad movable with respect to body and hydraulic piston to press tensioning pad on transmission chain, and cylinder head cover with housing forming body of tensioning device
CN105992892A (en) * 2014-02-21 2016-10-05 博格华纳公司 Chain tensioner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719163C1 (en) * 1987-06-09 1988-07-14 Porsche Ag Chain tensioner
US4974561A (en) * 1988-11-16 1990-12-04 Nissan Motor Co., Ltd. Lubrication device for engine
EP0456618A1 (en) * 1990-05-08 1991-11-13 FIAT AUTO S.p.A. An internal combustion engine with a tensioner for the transmission chain between two overhead camshafts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719163C1 (en) * 1987-06-09 1988-07-14 Porsche Ag Chain tensioner
US4974561A (en) * 1988-11-16 1990-12-04 Nissan Motor Co., Ltd. Lubrication device for engine
EP0456618A1 (en) * 1990-05-08 1991-11-13 FIAT AUTO S.p.A. An internal combustion engine with a tensioner for the transmission chain between two overhead camshafts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2917465A1 (en) * 2007-06-12 2008-12-19 Peugeot Citroen Automobiles Sa Internal combustion engine, has tensioning device with tensioning pad movable with respect to body and hydraulic piston to press tensioning pad on transmission chain, and cylinder head cover with housing forming body of tensioning device
CN105992892A (en) * 2014-02-21 2016-10-05 博格华纳公司 Chain tensioner
CN105992892B (en) * 2014-02-21 2019-06-14 博格华纳公司 Chain tensioning device

Also Published As

Publication number Publication date
DE69709466D1 (en) 2002-02-14
DE69709466T2 (en) 2002-09-19
FR2745056B1 (en) 1998-04-03
FR2745056A1 (en) 1997-08-22
EP0790437B1 (en) 2002-01-09

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